| APA | GPPN. (2012, February 14). In Acronym Geek. Retrieved 15:06, February 14, 2012, from http://www.acronymgeek.com/GPPN |
| MLA | "GPPN." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GPPN>. |
| MHRA | 'GPPN', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GPPN> [accessed 14 February 2012] |
| Chicago | "GPPN", http://www.acronymgeek.com/GPPN (accessed February 14, 2012). |
| CBE/CSE | GPPN [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GPPN. |
| Bluebook | GPPN, http://www.acronymgeek.com/GPPN (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GPPN, http://www.acronymgeek.com/GPPN (optional description here) (as of Feb. 14, 2012, 15:06). |
| AMA | GPPN. Acronym Geek. February 14, 2012, 15:06. Available at: http://www.acronymgeek.com/GPPN. Accessed February 14, 2012, 15:06. |